Block 1

Air temperature/RH, soil temperatures, and soil moisture are measured in the greenhouse, control, and F10 treatment plots. The station was first set up in 2008, using HOBO H8 4-Channel External data loggers to measure soil temperatures in the control and F10 plots. Three replicate depth profiles (surface, 10, 20 cm) at the 5, 10, and 15 meter stakes were installed about 1-2 meters inside the plots. In 2012, a CR21x logger with an AM25T multiplexer using type T thermocouples replaced the Hobos. In 2018, a CR1000 with air temperature/RH, soil temperature, and moisture was added to the greenhouse plot and the control portion of the greenhouse plot. In 2023, the AM25T multiplexer was wired to the CR1000, eliminating the separate soil logger.

Data loggers

Current setup: Campbell Science CR1000 LOGGER with AM25T multiplexer

Sensor Descriptions

  • RELATIVE HUMIDITY/TEMPERATURE: Campbell Scientific, CS500 Temperature and Relative Humidity Probe. Uses PRT for temperature measurement, a capacitive RH chip for RH. Accuracy is ±3% over 10-90% RH; ±6% over 90-100% RH. Manufactured by Vaisala, Inc.

  • THERMOCOUPLES: Omega Engineering, Copper-Constantan wire. Range -200 to 350 °C. Limits of error: Standard wire 1.0°C or 0.75% above 0°C and 1.0°C or 1.5% below 0°C. Special wire 0.5°C or 0.4%.

  • 107 THERMISTERS: Campbell Scientific, BetaTherm 100K6A1IA Thermistor, tolerance - ±0.2°C,

  • SOIL MOISTURE: Campbell Scientific, CS616, water content accuracy - ±2.5% VWC (using standard calibration with bulk EC of ≤ 0.5 dS m-1, bulk density of ≤ 1.55 g cm-3, and measurement range of 0% to 50% VWC) NOTE: need to apply correction for measuring in peaty soils.

List of manufacturers and suppliers.

Campbell Scientific, Inc. 81 W. 1800 N. Logan, Utah 84321-1784 (435)750-1739
Omega Engineering, Inc. P.O. Box 4047, Stamford, CT 06907-0047 (800)826-6342

Log of Changes
  • 2008 Added Hobo loggers to CT and F10 plots. Three replicate depth profiles (surface, 10, 20 cm).
  • 2012-07-13 Campbell Scientific 21X logger with AM25T multiplexer (Longitude -149.609083, Latitude 68.622629) set up in MAT06 Block 1 CT (control) and F10 plots measuring soil temperatures using type T thermocouples. Three replicate depth profiles (surface, 10, 20 cm) were installed at the 5, 10, and 15 meter south side plot stakes about 1-2 meters inside the plots. A small pit was cut into the soil and the thermocouples were inserted into the side wall of the pit.
  • 2018-06-11 CR1000 logger station with air/RH CS500 sensors in and out of the greenhouse. Using repurposed SC616 soil moisture and 107 temperature probes. Lots of extra cables.
  • 2019-08-17 Changed from 21x logger to a CR10x-PB
  • 2021-06-08 Ian Klupar changed the CR10x-PB logger since it stopped working during the winter.
  • 2023-06-10 Savannah and Jim rewired the soil logger station, with cables extending to the GH CR1000 station. This station now only has the AMT25T multiplexer wired to the GH CR1000. The program was rewritten to include the soil plot TC. Tables were renamed – Metadata = air temperature and RH; GHPlotsoil = inside and outside soil temperatures and moisture at 10 cm; Soil_plots = soil temperature in the CT and F10.
Current Data Tables
Greenhouse Met_data
Variable Description Units
TIMESTAMP Time Stamp
RECORD Record Number
Air_3M_Avg Air temperature at 3 meters Deg C
RH Relative humidity at 3 meters %
GH_Air_Avg Air temperature inside greenhouse Deg C
GH_RH Relative humidity inside greenhouse %
BattV_Min Battery voltage minimum for measurement period Volts
Greenhouse Plot Soil
Variable Description Units
TIMESTAMP Time Stamp
RECORD Record Number
GHCT_1_10cm_Avg Control section of Greenhouse plot, inter-tussock soil temperature at 10 cm Replicate 1 Deg C
GHCT_2_10cm_Avg Control section of Greenhouse plot, inter-tussock soil temperature at 10 cm Replicate 2 Deg C
GHCT_3_10cm_Avg Control section of Greenhouse plot, inter-tussock soil temperature at 10 cm Replicate 3 Deg C
GH_1_10cm_Avg Greenhouse, Inter-tussock soil temperature at 10 cm Replicate 1 Deg C
GH_2_10cm_Avg Greenhouse, Inter-tussock soil temperature at 10 cm Replicate 2 Deg C
GH_3_10cm_Avg Greenhouse, Inter-tussock soil temperature at 10 cm Replicate 3 Deg C
GHCT_1_10cm_VW Greenhouse control plot volumetric water content. Replicate 1 fractional percent
GHCT_1_10cm_PA_uS Greenhouse control plot probe output period. Replicate 1 uSec
GHCT_2_10cm_VW Greenhouse control plot volumetric water content. Replicate 2 fractional percent
GHCT_2_10cm_PA_uS Greenhouse control plot probe output period. Replicate 2 uSec
GHCT_3_10cm_VW Greenhouse control plot volumetric water content. Replicate 3 fractional percent
GHCT_3_10cm_PA_uS Greenhouse control plot probe output period. Replicate 3 uSec
GH_1_10cm_VW Greenhouse plot volumetric water content. Replicate 1 fractional percent
GH_1_10cm_PA_uS Greenhouse plot probe output period. Replicate 1 uSec
GH_2_10cm_VW Greenhouse plot volumetric water content. Replicate 2 fractional percent
GH_2_10cm_PA_uS Greenhouse plot probe output period. Replicate 2 uSec
GH_3_10cm_VW Greenhouse plot volumetric water content. Replicate 3 fractional percent
GH_3_10cm_PA_uS Greenhouse plot probe output period. Replicate 3 uSec
Control and F10 Soil_plots
Variable Description Units
TIMESTAMP Time Stamp TS
RECORD Record Number RN
RTempC_Avg Reference temperature on AM25T multiplexer Deg C
CT_1_sur_Avg Control plot surface (just in moss) temperature. Profile 1. Deg C
CT_1_10CM_Avg Control plot 10 cm temperature. Profile 2. Deg C
CT_1_20CM_Avg Control plot 20 cm temperature. Profile 2. Deg C
CT_2_SUR_Avg Reference temperature on AM25T multiplexer Deg C
CT_2_10CM_Avg Control plot surface (just in moss) temperature. Profile 2. Deg C
CT_2_20CM_Avg Control plot 10 cm temperature. Profile 3. Deg C
CT_3_SUR_Avg Control plot 20 cm temperature. Profile 3. Deg C
CT_3_10CM_Avg Reference temperature on AM25T multiplexer Deg C
CT_3_20CM_Avg Control plot surface (just in moss) temperature. Profile 3. Deg C
F10_1_SUR_Avg F10 plot surface (just in moss) temperature. Profile 1. Deg C
F10_1_10CM_Avg F10 plot 10 cm temperature. Profile 2. Deg C
F10_1_20CM_Avg F10 plot 20 cm temperature. Profile 2. Deg C
F10_2_SUR_Avg Reference temperature on AM25T multiplexer Deg C
F10_2_10CM_Avg F10 plot surface (just in moss) temperature. Profile 2. Deg C
F10_2_20CM_Avg F10 plot 10 cm temperature. Profile 3. Deg C
F10_3_SUR_Avg F10 plot 20 cm temperature. Profile 3. Deg C
F10_3_10CM_Avg Reference temperature on AM25T multiplexer Deg C
F10_3_20CM_Avg F10 plot surface (just in moss) temperature. Profile 3. Deg C
Greenhouse air temperature and relative humidity.
Block 3

Air temperature/RH, soil temperatures, and soil moisture are measured in the greenhouse, control, and F10 treatment plots. The station was first set up in 2008, in just control and F10 plots, measuring soil temperatures using three replicate depth profiles (surface, 10, 20 cm) at the 5, 10, and 15 meter stakes about 1-2 meters inside the plots. In 2018, the station was moved closer to the new greenhouse plot. Air temperature/RH, soil temperature, and moisture were added in the greenhouse plot and the control portion of the greenhouse plot.

Current setup: Campbell Science CR1000 LOGGER with AM25T and AM16/32 multiplexer

Sensor Descriptions

  • RELATIVE HUMIDITY/TEMPERATURE: Campbell Scientific, CS500 Temperature and Relative Humidity Probe. Uses PRT for temperature measurement, a capacitive RH chip for RH. Accuracy is ±3% over 10-90% RH; ±6% over 90-100% RH. Manufactured by Vaisala, Inc.

  • Windspeed and Direction: Met One 034B (supplied by Campbell Scientific),

  • THERMOCOUPLES: Omega Engineering, Copper-Constantan wire. Range -200 to 350 °C. Limits of error: Standard wire 1.0°C or 0.75% above 0°C and 1.0°C or 1.5% below 0°C. Special wire 0.5°C or 0.4%.

  • 107 THERMISTERS: Campbell Scientific, BetaTherm 100K6A1IA Thermistor, tolerance - ±0.2°C,

  • SOIL MOISTURE: Campbell Scientific, CS616, water content accuracy - ±2.5% VWC (using standard calibration with bulk EC of ≤ 0.5 dS m-1, bulk density of ≤ 1.55 g cm-3, and measurement range of 0% to 50% VWC) NOTE: need to apply correction for measuring in peaty soils.

List of manufacturers and suppliers.

Campbell Scientific, Inc. 81 W. 1800 N. Logan, Utah 84321-1784 (435)750-1739
Li-Cor: 4421 Superior St, P.O. Box 4425, Lincoln, Nebraska 68504 (800)447-3576
Omega Engineering, Inc. P.O. Box 4047, Stamford, CT 06907-0047 (800)826-6342

Log Changes.
  • Initial setup: 2008-06-11. A Campbell Scientific 21X logger, AM16/32 multiplexer, and type T thermocouples were set up in block 3. Depth profiles were set up at the 5, 10, and 15 meter stakes about 1-2 meters inside the Control (CT) and 10 grams Nitrogen plus 5 grams Phosphorus per meter squared (F10) plots. Three depths, surface, 10, and 20 cm, were installed into the side of a small dug pit.
    • CT_1 SUR, CT_1 10CM, CT_1 20CM, CT_2 Sur, CT_2 10CM, CT_2 20CM, CT_3 Sur, CT_3 10CM, CT_3 20CM, F10_1 Sur, F10_1 10CM, F10_1 20CM, F10_2 Sur, F10_2 10CM, F10_3 20CM, F10_3 Sur, F10_3 10CM, F10_3 20CM
  • 2011-06-09, upward and downward LiCor PAR sensors were added.
  • 2012-06-10 Added up and down CS300 Pyranometers for Albedo.
  • 2018-08-10 Move the station closer to the GH so Temperature/RH, thermistors, and soil moisture sensors can reach. Changed logger to a CR1000 and multiplexer to an AM25T. Added greenhouse HMP60 temperature and relative humidity, CS616 soil moisture, and 107 soil temperature sensors. Three 107 were placed in CT and GH plots at ~ 20 cm. Only 1 CT and 1 GH CS616 soil moisture sensors were installed at ~ 20 cm. Need to add more.
    • Measurements added:
    • AirTControl_Avg, RHCT, Air_GH_Avg, RH_GH,
    • T107_C_CT1_Avg, T107_C_CT2_Avg, T107_C_CT3_Avg, T107_C_GH1_Avg, T107_C_GH2_Avg, T107_C_GH3_Avg, VW_CT_Avg, PA_uS_CT_Avg, VW_GH_Avg, PA_uS_GH_Avg
    • Measurements for all sensors are 30-minute averages of 1-minute reads.
  • 2019-08-16 Changed the radio from a FreeWave FG radio to a Campbell Sci. RF401 with Pak Bus OS version 4.
  • 2019-08-20 Changed output so there are two tables. One for the Met data (60 sec reads and 30 min averages) and a second one for the soil data (180 sec reads and 180 min averages). This should help the battery drain in the winter.
Data Tables

Table: MetData Interval: 30 MIN

Fields:
  • BattV_Avg Units: Volts
  • AirTControl_Avg Units: Deg C
  • RHCT Units: %
  • Air_GH_Avg Units: Deg C
  • RH_GH Units: %

Table: SoilData Interval: 180 MIN

Fields:
  • T107_C_CT1_Avg Units: Deg C
  • T107_C_CT2_Avg Units: Deg C
  • T107_C_CT3_Avg Units: Deg C
  • T107_C_GH1_Avg Units: Deg C
  • T107_C_GH2_Avg Units: Deg C
  • T107_C_GH3_Avg Units: Deg C
  • VW_CT_Avg
  • PA_uS_CT_Avg Units: uSec
  • VW_GH_Avg
  • PA_uS_GH_Avg Units: uSec
  • CT1_SUR_AVG_Avg Units: Deg C
  • CT1_10cm_AVG_Avg Units: Deg C
  • CT1_20cm_AVG_Avg Units: Deg C
  • CT2_SUR_AVG_Avg Units: Deg C
  • CT2_10cm_AVG_Avg Units: Deg C
  • CT2_20cm_AVG_Avg Units: Deg C
  • CT3_SUR_AVG_Avg Units: Deg C
  • CT3_10cm_AVG_Avg Units: Deg C
  • CT3_20cm_AVG_Avg Units: Deg C
  • NP1_SUR_AVG_Avg Units: Deg C
  • NP1_10cm_AVG_Avg Units: Deg C
  • NP1_20cm_AVG_Avg Units: Deg C
  • NP2_SUR_AVG_Avg Units: Deg C
  • NP2_10cm_AVG_Avg Units: Deg C
  • NP2_20cm_AVG_Avg Units: Deg C
  • NP3_SUR_cm_AVG_Avg Units: Deg C
  • NP3_10_AVG_Avg Units: Deg C
  • NP3_20cm_AVG_Avg Units: Deg C
  • RTempC_Avg Units: Deg C